The Eaton Industries NZMB M power circuit breaker is designed for flexibility and space efficiency, encompassing a wide range of applications in just four compact sizes for the IEC market. It features a nominal continuous current of 40A and a nominal disconnecting capacity of 53kA at 400. The overload protection setting range is 320 – 400A, and the non-delayed short circuit setting range is also 320 – 400A. The main circuit connection method is a screw connection, with three poles. The unit also boasts thermomagnetic releases for motor protection, phase-failure sensitivity, and tripping class 10A. The NZMB M fulfills all requirements of the AC-3 switching category in accordance with IEC/EN 60947-4-1 and IEC/EN 60947-2 standards.
Specifications
Overload release current setting (A) : 32 A to 40 A
Adjustment range undelayed short-circuit release (A) : 320 A to 560 A
With thermal protection : Yes
Phase failure sensitive : Yes
Switch off technique : Thermomagnetic
Rated operating voltage (V) : 440 V to 440 V
Rated permanent current Iu (A) : 40
Rated operation power at AC-3, 230 V (kW) : 11
Rated operation power at AC-3, 400 V (kW) : 18.5
Type of electrical connection of main circuit : Other
Type of control element : Rocker lever
Device construction : Built-in device fixed built-in technique
With integrated auxiliary switch : No
With integrated under voltage release : No
Number of poles : 3
Rated short-circuit breaking capacity lcu at 400 V, AC (kA) : 18.5
Degree of protection (IP) : IP20
Height (mm) : 145
Width (mm) : 90
Depth (mm) : 88
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